I've been using MS wireless keyboard 6000 v2.0 and wireless mouse 5000 v1.0 without any problem. I have a dual boot system (windows 7 - linux mint).

Since I upgraded mint from 13 to 14 (tried also 14.1), keyboard and mouse don't function properly. After a few minutes or a couple of hours sometimes, both keyboard and mouse disappear. The only thing I can do is unplug the usb receiver from pc usb slot. After some time, same thing happens again.
I don't want to change my keyboard/mouse since I know that it is a mint 14 issue (both windows 7 and mint 13 work perfectly).

Since I have no answer yet, I have to go back to Mint 13. Everything works perfectly in Mint 13.
I guess I'll never find the answer to my wireless keyboard/mouse mint 14 issue. I feel sorry for that , 'cause I've always said what a great support I've found in mint forums... I'm not sure any more. Keyboard n mouse issues are elementary for a computer system. And, I never believed that a newer mint version could bring such a strange problem. Always thought newer is better. Not anymore...

I know, some people think that my continuous messages are annoying. I keep posting because I am sure that the ms keyboard/mouse problem has a very simple solution. If only the right person read my posts... It is so hard to believe that I can't use mint 14.1 because of MS keyboard & Mouse...